Help , how to ID a trans?

4276bbl · #1 03-23-2005, 03:39 AM

going to look at a 4speed trans, suppose to of come out of a 69 chevelle, what #'s and where do i look to tell if its a m21 or m22 etc.. thanks

JoeG · #2 03-23-2005, 03:44 AM

Here's some info- web page

4276bbl · #3 03-23-2005, 03:49 AM

hey joe , thanks whats makes the difference of a m21 or m22

JoeG · #4 03-23-2005, 04:01 AM

There might still be a steel tag bolted to the trans--'69 --M21--3946798( XD or XF) M22--3950318(X1)

**John Brown** · #5 03-23-2005, 06:15 AM

There will also be a code stamped in the case. Ending in A=2.54, B=2.20, C=2.20~M22.

It should look like this

Stamping

4276bbl · #6 03-24-2005, 03:51 AM

ok, looked at trans. the metal tag reads 3981710wy
tailshaft reads 3978764- side cover 395264
main case 3925661 and their was another stamping that read
555310 so far i believe this to be a 70-71 trans also a aluminum case the tail shaft is 12" long if that helps
still don't know if its m21-m22 or whatever thanks!

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